<!-- 127.0.0.1/login  登录界面 -->
<div id="loginDiv" class="animate form login_form">
	<section class="login_content">
		<form>
			<h1>Login Form</h1>
			<div>
				<!--输入用户名-->
				<input
						v-model:value="user.userName"
						type="text"
						class="form-control"
						placeholder="Username"
						required=""
				/>
			</div>
			<div>
				<!--输入密码-->
				<input
						v-model:value="user.password"
						type="password"
						class="form-control"
						placeholder="Password"
						required=""
				/>
			</div>
			<!--输入验证码-->
			<div>
				<input
						class="form-control input-val"
						type="text"
						v-model:value="user.validateCode"
						placeholder="请输入验证码（不区分大小写）"
						style="float: left; width: 65%; margin-bottom: 0px"
				/>
				<canvas id="canvas" @click="draw()" width="100" height="36"></canvas>
			</div>
			<div>
				<a @click="login" class="btn btn-default submit" href="javascript:void(0);">Log in</a>
				<a class="reset_pass" href="#">Lost your password?</a>
			</div>

			<div class="clearfix"></div>

			<div class="separator">
				<p class="change_link">
					New to site?
					<a href="/register" class="to_register"> Create Account </a>
				</p>

				<div class="clearfix"></div>
				<br />

				<div>
					<h1><i class="fa fa-paw"></i> Gentelella Alela!</h1>
					<p>©2016 All Rights Reserved. Gentelella Alela! is a Bootstrap 3 template. Privacy and Terms</p>
				</div>
			</div>
		</form>
	</section>
</div>
<script>

	var loginVue = new Vue({
		el: "#loginDiv",
		data: {
			user: {
				userName: "",
				validateCode: "",
				password: "",
			},
			show_num: [],
		},
		methods: {
			login: function () {

				if (this.user.userName == "" || this.user.password == "") {
					layer.alert("用户名、密码不能为空。", { icon: 0 });
					return;
				}

				if (this.user.validateCode == "") {
					layer.alert("请输入验证码。", { icon: 0 });
					return;
				}

				if (this.user.validateCode != this.show_num.join("")) {
					layer.alert("请输入验证码。", { icon: 0 });
					return;
				}

				var self = this;
				$.ajax({
					url: "/api/login",
					type: "post",
					contentType: "application/json",
					data: JSON.stringify(self.user),
					success: function (data) {
						if (data.status == 200) {
							location.href = "/test/thymeleafIndex";
						} else {
							layer.msg(data.message, { icon: 0 });
						}
					},
					error: function (data) {
						layer.msg(data.responseText, { icon: 0 });
					},
				});
			},

			draw: function () {
				var canvas_width = $("#canvas").width();
				var canvas_height = $("#canvas").height();
				var canvas = document.getElementById("canvas"); //获取到canvas的对象
				var context = canvas.getContext("2d"); //获取到canvas画图的环境
				canvas.width = canvas_width;
				canvas.height = canvas_height;
				var sCode = "A,B,C,E,F,G,H,J,K,L,M,N,P,Q,R,S,T,W,X,Y,Z,1,2,3,4,5,6,7,8,9,0";
				var aCode = sCode.split(",");
				var aLength = aCode.length; //获取到数组的长度

				for (var i = 0; i <= 3; i++) {
					var j = Math.floor(Math.random() * aLength); //获取到随机的索引值
					var deg = (Math.random() * 30 * Math.PI) / 180; //产生0~30之间的随机弧度
					var txt = aCode[j]; //得到随机的一个内容
					this.show_num[i] = txt.toLowerCase();
					var x = 10 + i * 20; //文字在canvas上的x坐标
					var y = 20 + Math.random() * 8; //文字在canvas上的y坐标
					context.font = "bold 23px 微软雅黑";

					context.translate(x, y);
					context.rotate(deg);

					context.fillStyle = this.randomColor();
					context.fillText(txt, 0, 0);

					context.rotate(-deg);
					context.translate(-x, -y);
				}
				for (var i = 0; i <= 5; i++) {
					//验证码上显示线条
					context.strokeStyle = this.randomColor();
					context.beginPath();
					context.moveTo(Math.random() * canvas_width, Math.random() * canvas_height);
					context.lineTo(Math.random() * canvas_width, Math.random() * canvas_height);
					context.stroke();
				}
				for (var i = 0; i <= 30; i++) {
					//验证码上显示小点
					context.strokeStyle = this.randomColor();<!--调用随机颜色函数randomColor-->
					context.beginPath();
					var x = Math.random() * canvas_width;
					var y = Math.random() * canvas_height;
					context.moveTo(x, y);
					context.lineTo(x + 1, y + 1);
					context.stroke();
				}
			},

			randomColor: function () {
				var r = Math.floor(Math.random() * 256);
				var g = Math.floor(Math.random() * 256);
				var b = Math.floor(Math.random() * 256);
				return "rgb(" + r + "," + g + "," + b + ")";
			},
		},

		mounted: function () {
			this.draw();
		},
	});
</script>
